CVE-2026-28480 | THREATINT

Description

OpenClaw versions prior to 2026.2.14 contain an authorization bypass vulnerability where Telegram allowlist matching accepts mutable usernames instead of immutable numeric sender IDs. Attackers can spoof identity by obtaining recycled usernames to bypass allowlist restrictions and interact with bots as unauthorized senders.

PUBLISHED Reserved 2026-02-27 | Published 2026-03-05 | Updated 2026-03-05 | Assigner VulnCheck

MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Problem types

Authentication Bypass by Spoofing

Product status

Default status

unaffected

Any version before 2026.2.14

affected

Credits

Vincent Koc (@vincentkoc) reporter

References

github.com/...enclaw/security/advisories/GHSA-mj5r-hh7j-4gxf (GitHub Security Advisory (GHSA-mj5r-hh7j-4gxf)) vendor-advisory

github.com/...ommit/e3b432e481a96b8fd41b91273818e514074e05c3 (Patch Commit #1) patch

github.com/...ommit/9e147f00b48e63e7be6964e0e2a97f2980854128 (Patch Commit #2) patch

www.vulncheck.com/...ame-in-telegram-allowlist-authorization (VulnCheck Advisory: OpenClaw < 2026.2.14 - Identity Spoofing via Mutable Username in Telegram Allowlist Authorization) third-party-advisory

cve.org (CVE-2026-28480)

nvd.nist.gov (CVE-2026-28480)

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